15 — How to Make Deep Reach C Clamps All Wood only $10 Extreme Strength

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These are by far the strongest all wood clamps I’ve ever seen on YouTube. They are stronger than the deep reach clamps made by Matthias Wandel & John Heisz, (that was a challenge guys ). And mine don’t have any metal in them!

Here is the Tap & die set I used for this job:

You can make these 12” deep reach C-Clamps with amazing strength for only $10.00! I was about to buy some for a project but the quality ones I found were $107.00 online, so I did some research and decided to make mine.

I studied some material properties, and of all domestics, oak has the second highest modulus of elasticity behind only hickory. With over 1.8 million pounds/sq.in. Modulus of elasticity defines the relationship between stress and strain, and effectively measures stiffness. The exact property you want in the arm of a clamp. I also found a study done with Fine Woodworking Magazine & Case Western Reserve University in 2007 measuring glue bond strengths. It utilized 6 glue types and different species of wood, 162 joints tested in all. Among the domestics, red oak combined with type 1 PVA glue (Titebond), had by far the greatest bond strength.

So, it was a no-brainer. Oak, is cheap as a hardwood. You can buy #2 common, because narrow sizes are all that is needed. And, many people have oak offcuts hanging around.

I did buy a 36” maple dowel for the screw thread. It was a 1-1/2” diameter. You could certainly turn one. But for me this was easier. And one dowel makes 2 clamps.

I made 2 clamps with the intention of testing them to destruction, but I didn’t have a strong enough scale. After I get one and do that, I think I’ll make 10 for my shop, and I’ll have paid less than buying a single one online.

I did cut all the threads and tapped the clamp. This is easy to do.

Detailed plans are available on my website if you are interested in duplicating these.

NOTE: Matthias Wandel, and John Heisz are both fantastic woodworkers. Very intelligent and very creative. If you haven’t seen their work, you should definitely check out their channels.

Matthias Wandel:
John Heisz: Источник видео youtube.com/watch?v=wd16ZC_evTE